Quantum Nondemolition Gate Operations and Measurements in Real Time on Fluctuating Signals
Quantum Physics
2018-11-14 v1
Abstract
We demonstrate an optical quantum nondemolition (QND) interaction gate with a bandwidth of about 100 MHz. Employing this gate, we are able to perform QND measurements in real time on randomly fluctuating signals. Our QND gate relies upon linear optics and offline-prepared squeezed states. In contrast to previous demonstrations on narrow sideband modes, our gate is compatible with non-Gaussian quantum states temporally localized in a wave-packet mode, and thus opens the way for universal gate operations and realization of quantum error correction.
Keywords
Cite
@article{arxiv.1712.08411,
title = {Quantum Nondemolition Gate Operations and Measurements in Real Time on Fluctuating Signals},
author = {Yu Shiozawa and Jun-ichi Yoshikawa and Shota Yokoyama and Toshiyuki Kaji and Kenzo Makino and Takahiro Serikawa and Ryosuke Nakamura and Shigenari Suzuki and Shota Yamazaki and Warit Asavanant and Shuntaro Takeda and Peter van Loock and Akira Furusawa},
journal= {arXiv preprint arXiv:1712.08411},
year = {2018}
}